Unprotected sex, resulting in specific sexually transmitted diseases may increase the risk of developing certain types of caners

HPV is 70% caused after unprotected sex 

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.